Crown stopper



Patented Apr. 26, 1927.

UNITED STATES CARLOS BENETTI, OF BARCELONA, SPAIN.

CROWN STOPPER.

.Application This invention relates to Stoppers for bottles and has for its object to improve the construction of the stoppers so that, although being superior to crown Stoppers of known construction, they are of great simphcity, very eflicient and economical. p

There is no need to emphasize the importance of a good bottle closure.

To obtain a comparatively good and efficient hermetical closing of a bottle by means of a stopper of known type the stopper must not be only good qualit-y cork, but it is further necesary, when gaseous liquids are yto be bottled, to insert a disk of impermeable paper between the cork and the metal cap, and to fasten by means of adhesive material the paper on one side to the bottom of the cap and on the other side to the cork. A. bottle stopper of this type is considered as giving maximum security for a good closing of the bottle. Notwithstanding the care taken in the manufacture of the above mentioned stopper, it happens frequently that the clo sure is not perfectly airtight, so that the gases are not retained in the bottle with sufficient security. The reason therefore is that not sufficient pressure is exerted on the stopper, and this pressure cannot be increased on account of the limited resistance of the glass and the material which constitutes the metallic cap. These inconveniences are overcome. according to the present invention, by fitting the metal cap of a bottle stopper with two concentric grooves which may be continuous or each composed of a number of separate sections. The two concentric grooves are in alignment, the outer one with the outer circumference of the bottle neck and the inner one with the inner circumference of the bottle neck. Owing to these concentric grooves in the metal cap no gases can escape from the bottle between the cork and the metal cap. In order to securely hold the metal cap on the cork .disk triangular flaps are stamped out of the material of the flange of the metal cap so that they penetrate into the cork diskv If, for any reasons whatsoever, it should not be desired to make the concentric grooves in the top plate of the metal cap a metal disk may be used which has these concentric grooves and is inserted between the upper surface of the cork disk and the metal cap. The cork disk may further be securely fixed on a metal cover by means of an indentation led May 5, 1925, Serial No. 28,250, and in Spain March 15, 1925.

pressed into the outer surface of the flange of' the metal cover. y

Several embodiments of the invention are shown in the accompanying drawings in which Fig. 1 shows in vertical section an improved bottle stopper in closing position on a bottle neck.

Fig. 1a is top plan view of Fig. l.

Fig. 2 is a plan View of the metal cap seen from above. 4 v

Fig. 2a isa side elevation of the metal cap and Fig. 2' is a plan view seen from below.

Fig. 3 shows in cross section an auxiliary .l

metal disk to be inserted between the cork disk and the metal cap.

Fig. Sais a top planview of Fig. 8.

y Fig. t vshows in section a metal cap with an auxiliary metal disk. y, l I

Fig. la is applan View of Fig. li.

Fig. 5 shows in plan view from below al cork disk with metal cover.

Fig. 5a is a section of Fig. 5. y

Fig. 5b is a plan View of Fig. 5a seen from above.

As shown in Figs. l7 la, 2, 2, and 2b the improved bottle stopper consists of a plain cork disk a of slightly greater diameter than the upper end of the bottle neck Z) and of a metal cap d. This metal cap Z has in its top plate two concentric grooves c, c and a flange e. The concentric grooves c, c are preferably continuous as shown in Fig. 2 and arranged so that groove c stands above the inner edge of the bottle neck b and groove o above the outer edge of the same. These grooves are designed to increase the resistance to tension and exerted on the cork disk at the inner and outer circumference of the' bottle neck.

In the flange e of the metal cap upwardly directed aps f are arranged which are stamped out of the material of the flange so that they are slightly bent inward.

To close a bottle, a cork disk a is placed on the bottle neck whereupon, in the well known manner, a metal cap 0l is placed over said cork disk and clamped under pressure on the bottle neck with the aid of a commonly used machine so that the edge of flange c is pressed into the circular groove g in the outer surface of the bottle neck. When the metal cap d is placed over the cork disk a the inwardly projectingdiaps f give way as they are elastic, to penetrate into the corkdisk when the saine has, been strongly compressed by the pressure exerted on and by the metal cap. The cork disk is thus securely fixed intheinetal cap. This is necessary as the gases in the closed bottle have the tendency to draw theclosure inward so that, `as the cork disk is retained in the metal cap,- this-pressure does notl act only upon the cork disk but also upon the metal cap.

Owing to the concentric'- grjooves c, of in the top plate of the nietal'cap gases cannot escape betW-eenthe cork disk and the in'etal cap. The gases cannot escape through; thc openings in the flange e produced by the stamping out ofthe fla s as these openings are tightly closed y the material of the cork disk a.

The grooves 0,- c might, instead of being continuous, be composed of several separate portions. Thevfiaps inthe flange e 'ofthe metal cap CZ might be of another shape than the triangular shape shown.

Ii', for any reasonv whatsoever, it should not be desirable toniake the concentric grooves in the metal cap-d anA auxiliary nietal disk lv may' be used'ias shoWnin-Figs. 3, 3n and 4f, 4ta. In? this auxiliary metal disk h the cncentric'grooves C arqarrangedasshown `in Figs; 3,35 and 4. rI his auxiliarymetal diskis inserted in the v'nfietal cap said flaps 'stamping and designed to securely ix said nietal cap before the same is placed upon the4 cork. disk.

As shown in-Eigs 555 and 5" the cork disk a may be inserted in a cover t' of sheet nie-tal and. retained. in this cover by an indentation c in the flange of said sheet niet-al coverLas shown in Fig. 5,

The lower surface of the cork disk L inay have a coating. ofi parai'lin` or other convenient substance to prevent direct contact between thecontents 'of the/bottle and thel cork disk so that it is impossible for thetaste of theI liquid-to beinipai'r'ed'hy the cork.

I claiinz- A bottle stopper cinnprisinpin combination a plain cork disk of slightly greater diameter thun-the upper end ofv the neck of the bottle to he closed., a metalcap having two concentric grooves. infits top plate said grooves being in alignmenty with the outer and inner edges of the bottle neck, respectively anddesigned. tov incr-easethe resistance totension andthe pressure exerted on the cork disk at the inner-.and outer circumference of the bottle neck andl inwardly and upwardly direetediaps in theflange of-v said being produced by cork disk` in said inetal cap.

'In testimony whereof l have signed my name t0 thisv specification.

CARLOS v BEN-ETTL 

